Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1db9becc78d9805…

MALICIOUS

PDF

45.1 KB Created: 2020-08-30 03:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4222e1ac8fcda1d5f7bc756adb0c2e28 SHA-1: ba82b108770a56d71c652e433ba5bbda49a0893b SHA-256: c1db9becc78d9805b41f04532c5bbe19169c3429e5d680f42d7cadd2f8657d47
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to lure users into clicking on a malicious redirector. The primary malicious URL identified is https://ttraff.me/wix?keyword=jarvis+physical+examination+and+health+assessment+8th+edition+pocket+companion. While the document body contains garbled text, the heuristics clearly indicate a malicious redirector and a link farm, suggesting a phishing or scam attempt.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/wix?keyword=jarvis+physical+examination+and+health+assessment+8th+edition+pocket+companion
    • https://cdn.shopify.com/s/files/1/0432/3137/9619/files/dawokun.pdf
    • https://cdn.shopify.com/s/files/1/0432/8813/3787/files/80143175068.pdf
    • https://cdn.shopify.com/s/files/1/0431/7501/8662/files/87089010643.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/synchronous_and_asynchronous_counters_in_digital_electronics.pdf
    • https://cdn.shopify.com/s/files/1/0435/2930/6263/files/60421737424.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/dabesamajijajerigonakuf.pdf
    • https://static.usrfiles.com/ugd/a382ee_f9a8a2bd05df40f289435291df669546.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0018bb3149a436194e978a19552e0c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_40fac45572904770b6423b61e4f8c578.pdf
    • https://static.usrfiles.com/ugd/40512e_a283f7c2763b43478212128001940bb1.pdf
    • https://static.usrfiles.com/ugd/b8c837_9056e75d50ba42f3a527535cb03f9f28.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006338.bin
d4ce0273b7c213f980c7ba50d428ae09733e39959c14d795a905db846982262a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6338 5580 bytes
font_01_sfnt_off00007612.bin
efb12117bf0145b3df199b11ffb7d374df821b520c3ce79fb3b4c9cd2d7c6710		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7612 10384 bytes
font_02_sfnt_off000098a2.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98A2 4324 bytes

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